Shading by Velocity?

Fluid Dynamics for LightWave 3D
NovySan
Posts: 1
Joined: 15 Mar 2011, 00:41

Shading by Velocity?

Postby NovySan » 15 Mar 2011, 00:47

I'd like to shade the fire channel by velocity with red and green vectors that can then be used as a input to a vector blur to create a "heat distortion" effect. Can this be done with the current build?

Dan Novy
Technical Supervisor
Flash Film Works

jascha
Site Admin
Posts: 978
Joined: 30 Jun 2008, 21:50
Contact:

Re: Shading by Velocity?

Postby jascha » 22 Mar 2011, 13:51

Such 2D vectors cannot be rendered yet. Using the temperature field with a for heat distortion works great though (see attached movies - tutorial is in the works). This may even be preferable to using the velocity because it renders faster and the results look equally plausible. Yet, rendering average motion vectors for such post-effects may still make it into one of the next updates.
Attachments

[ Play Quicktime file ] rendered_distortion_over_background.mov [ 1.3 MiB | Viewed 1461 times ]

[ Play Quicktime file ] temp_as_distortion_input.mov [ 1.76 MiB | Viewed 1461 times ]

jascha

daryn
Posts: 2
Joined: 04 May 2016, 05:30

Re: Shading by Velocity?

Postby daryn » 31 Jul 2016, 01:19

How do you actually use the temperature field for heat distortion?
Do you have any step by step instructions on this or an example file?

Thanks :)

paulselhi
Posts: 648
Joined: 09 Aug 2009, 23:51
Contact:

Re: Shading by Velocity?

Postby paulselhi » 03 Aug 2016, 09:14

render out a temp pass and use that in post as a distortion.
Fundamentals OF TurbulenceFD In Cinema 4D - Over 13 Hours of Tutorials and Projects Available Now
http://www.black-and-white-to-color.com/ipbsfx/files/file/127-tfd-cinema-4d-fundamentals//

Ipeleng
Posts: 1
Joined: 24 Oct 2017, 12:48

Re: Shading by Velocity?

Postby Ipeleng » 27 Oct 2017, 06:39

Could you share the Project file for the video you have.
As I would like to know how to get the colour shading right


Return to “TurbulenceFD for LightWave 3D”

Who is online

Users browsing this forum: No registered users and 1 guest